setup_bak

#!/bin/sh
set -e

cat /etc/group | grep docker

setup_docker_GID(){
	local WARN=0
	if [ ! -S /var/run/docker.sock ]; then
		WARN=1
		>&2 echo "WARNING: /var/run/docker.sock is not bound from host"
	else
		local SOCK_GID="$(ls -aln /var/run/docker.sock | awk '{print $4}')" 
		if [ "${SOCK_GID}" == 0 ] || [ "${SOCK_GID}" == '' ]; then
			WARN=1
			>&2 echo "WARNING: /var/run/docker.sock runs with root group"
		fi
		if [ "${WARN}" == 1 ]; then
			>&2 echo " ==> Jenkins will not be able to run Docker"
			return
		fi

		# check if GID does not exist
		if [ ! grep -Eq "^[^:]+:[^:]*:${SOCK_GID}:.*$" /etc/group ]; then
			echo "setting docker group GID to ${SOCK_GID}"
			groupmod -g "${SOCK_GID}" docker
		else
			# check if jenkins user is in that group
			if [ " $(id -G jenkins) " =~ ".*\ ${SOCK_GID}\ .*" ]; then
				echo "jenkins is group $(getent group "${SOCK_GID}" | cut -d: -f1), nothing to do"
				return
			fi
			# group exists ...have to add jenkins to a random group
			gpasswd -a jenkins "${SOCK_GID}"
			>&2 echo "WARNING: added jenkins user to existing group $(getent group "${SOCK_GID}" | cut -d: -f1)."
			>&2 echo "         ==> Consider changing the GID of your docker group (to a higher value)"
		fi
	fi
}

setup_docker_GID

cat /etc/group | grep docker

# docker volume is initialized as last user in Dockerfile, which is root
# thus we change that to jenkins
chown -R jenkins:jenkins /var/jenkins_home

exec su jenkins -c "/bin/tini -s -- /usr/local/bin/jenkins.sh"